larger individial weeds can be cut out of the lawn with a long blade but can leave quite a large space behind of non grass. Usually one must fill with compost and reseed.

Try making grass plugs by sowing seed in the base of a pot carrying tray which can be foc from the GC. Fill with compost to depthof pot grip and sow the seed.

When ready, just firm into the gap left by the weed - good as new!